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About BayleyiteHide

William Shirley Bayley
Mg2(UO2)(CO3)3 · 18H2O
Yellow, whitish yellow
Specific Gravity:
Crystal System:
Named after William Shirley Bayley (1861-1943), American mineralogist and geologist. It was first observed and collected by the American geologist Charles Alfred Anderson from the oxydationzone of the Hillside Mine, Arizona, USA and first described as a new mineral by Axelrod et al. (1951).
After collecting the bayleite when storaged in drier atmosphere becomes dull and disintegrate to a yellow powder.

Classification of BayleyiteHide

Approved, 'Grandfathered' (first described prior to 1959)

E : Uranyl Carbonates
D : UO2:CO3 = 1:3

3 : AmBn(XO3)p·xH2O, with (m+n):p = 1:1

11 : Carbonates
11 : Carbonates of Cr and U

Physical Properties of BayleyiteHide

Yellow, whitish yellow
2.05 g/cm3 (Measured)    2.06 g/cm3 (Calculated)

Optical Data of BayleyiteHide

Biaxial (-)
RI values:
nα = 1.453 - 1.455 nβ = 1.490 - 1.492 nγ = 1.498 - 1.502
Measured: 30°
Max Birefringence:
δ = 0.045 - 0.047
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r > v distinct
X = Pinkish
Y = Light yellow
Z = Light yellow

Chemical Properties of BayleyiteHide

Mg2(UO2)(CO3)3 · 18H2O

Crystallography of BayleyiteHide

Crystal System:
Cell Parameters:
a = 26.65 Å, b = 15.31 Å, c = 6.53 Å
β = 93.07°
a:b:c = 1.741 : 1 : 0.427
Unit Cell V:
2,660.49 ų (Calculated from Unit Cell)
Crystals minute, short-prismatic; also acicular; in divergent groups (artificial material).

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0015706BayleyiteMayer H, Mereiter K (1986) Synthetic bayleyite, Mg2[UO2(CO3)3]*18H2O: Thermochemistry, crystallography and crystal structure Tschermaks Mineralogische und Petrographische Mitteilungen 35 133-1461986synthetic0293
CIF Raw Data - click here to close

Type Occurrence of BayleyiteHide

General Appearance of Type Material:
As crust on gypsum and mica schist
Geological Setting of Type Material:
Post-mining efforescent coatings on mine walls.
Associated Minerals at Type Locality:

Other Language Names for BayleyiteHide


Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Bayleyite associated with LiebigiteCa2(UO2)(CO3)3 · 11H2O
1 photo of Bayleyite associated with AndersoniteNa2Ca(UO2)(CO3)3 · 6H2O

Related Minerals - Nickel-Strunz GroupingHide

5.ED.10SwartziteMgCa(UO2)(CO3)3 · 12H2OMon. 2/m : P21/m
5.ED.15AlbrechtschraufiteCa4Mg(UO2)2(CO3)6F2 · 17-18H2OTric. 1 : P1
5.ED.20LiebigiteCa2(UO2)(CO3)3 · 11H2OOrth. mm2
5.ED.25RabbittiteCa3Mg3(UO2)2(CO3)6(OH)4 · 18H2OMon.
5.ED.30AndersoniteNa2Ca(UO2)(CO3)3 · 6H2OTrig. 3 : R3
5.ED.35GrimseliteK3Na(UO2)(CO3)3 · H2OHex.
5.ED.45ZnucaliteZn12Ca(UO2)(CO3)3(OH)22 · 4H2OOrth.
5.ED.50ČejkaiteNa4(UO2)(CO3)3Mon. m : Bb
5.ED.50AgricolaiteK4(UO2)(CO3)3Mon. 2/m : B2/b

Related Minerals - Dana Grouping (8th Ed.)Hide · 12H2OMon. 2/m : P21/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

11.11.1StichtiteMg6Cr3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
11.11.2Rutherfordine(UO2)CO3Orth. mm2 : Imm2
11.11.3Joliotite(UO2)CO3 · nH2OOrth.
11.11.4GrimseliteK3Na(UO2)(CO3)3 · H2OHex.
11.11.6MetazelleriteCa(UO2)(CO3)2 · 3H2OOrth.
11.11.7ZelleriteCa(UO2)(CO3)2 · 5H2OOrth.
11.11.8WyartiteCaU5+(UO2)2(CO3)O4(OH) · 7H2OOrth.
11.11.9UrancalcariteCa(UO2)3(CO3)(OH)6 · 3H2OOrth.
11.11.10SharpiteCa(UO2)3(CO3)4 · 3H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
11.11.11VogliteCa2Cu(UO2)(CO3)4 · 6H2OMon.
11.11.12AndersoniteNa2Ca(UO2)(CO3)3 · 6H2OTrig. 3 : R3
11.11.13SwartziteMgCa(UO2)(CO3)3 · 12H2OMon. 2/m : P21/m
11.11.14RabbittiteCa3Mg3(UO2)2(CO3)6(OH)4 · 18H2OMon.
11.11.15Kamotoite-(Y)Y2(UO2)4(CO3)3O4 · 14H2OMon. 2/m
11.11.16Shabaite-(Nd)Ca(Nd,Sm,Y)2(UO2)(CO3)4(OH)2 · 6H2OTric. 1 : P1
11.11.17Astrocyanite-(Ce)Cu2(Ce,Nd,La)2(UO2)(CO3)5(OH)2 · 1.5H2OHex.
11.11.18Bijvoetite-(Y)Y8(UO2)16(CO3)16O8(OH)8 · 39H2OMon.
11.11.20ZnucaliteZn12Ca(UO2)(CO3)3(OH)22 · 4H2OOrth.

Fluorescence of BayleyiteHide

Weakly fluorescent in UV.

Other InformationHide

Soluble in water.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for BayleyiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Axelrod et. al (1948) Bulletin of the Geological Society of America: 59: 1310.
Axelrod, J.M., Grimaldi, F.S., Milton, C., Murata, K.J. (1951) The uranium minerals from the Hillside mine, Yavapai County, Arizona. American Mineralogist: 36: 1-22.
Palache, C., Berman, H., Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 237-238.
Mayer, H., Mereiter, K. (1986) Synthetic bayleyite, Mg2[UO2(CO3)3]·18H2O: thermochemistry, crystallography and crystal structure. Tschermaks Mineralogische und Petrographische Mitteilungen: 35: 133-146.
Burns, P.C. (2005) U6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

Internet Links for BayleyiteHide

Localities for BayleyiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Mendoza Province
    • Malargüe Department
      • Pampa Amarilla mining district
Linares, E. El Yacimiento Cerro Huemul, Malargue, Mendoza. Informe Comision Nacional de Energia Atomica. Inedito. 1956; American Mineralogist: 51: 1-13
  • Saskatchewan
    • Athabasca Basin
Handbook of Mineralogy
Czech Republic
  • Karlovy Vary Region
Pavel Škácha
  • Vysočina Region
    • Žďár nad Sázavou District
      • Rožná
        • Rožná deposit
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 2. část. (Kutna Hora, issue 2
  • Occitanie
    • Hérault
      • Lodève
        • Le Bosc
Le Règne Minéral, Hors Série IV (1998)
        • Lodève
Le Règne Minéral, Hors Série IV (1998)
  • Thuringia
    • Ronneburg U deposit
T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Plaka
            • Paliokamariza Mines (Paleokamariza Mines)
Rieck, B., Kolitsch, U., Voudouris, P., Giester, G. and Tzeferis, P. (2018): Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt 29 (5), 32-77 (in German).
Middle East
Handbook of Mineralogy
  • Marrakesh-Safi Region
    • Al Haouz Province
      • Amizmiz Cercle
        • Guedmioua Caïdat
          • Azgour (Azegour)
J. Geffroy, J.A. Sarcia & J. Chervet (1960): "Les minéraux uranifères français et leurs gisements" p231
  • Catalonia
    • Lleida (Lérida)
      • El Pallars Jussà
        • La Vall Fosca
          • La Torre de Cabdella (La Torre de Capdella)
            • Castell-estaó
  • Bern
    • Interlaken-Oberhasli
      • Guttannen
        • Gerstenegg
Rolf Luetcke
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 69
  • Çanakkale Province
Top, G., Tutay, Y. Ö., & Kampfl, G. (2018). Determination of Uranium-Bearing Samples in Terms of Possible Contamination, Arikli Uranium Region, Çanakkale, Turkey (No. IAEA-CN--261).
  • Arizona
    • Cochise County
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.:69
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 130.
    • Yavapai Co.
      • Eureka Mining District
        • Bagdad
          • Bozarth Mesa
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 236, 238; Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 111, 130, 365; Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 50; Axelrod, J.M., et al (1951), The uranium minerals from the Hillside mine, Yavapai Co., AZ, Am.Min.: 36: 1-22; Frondel, C.C. (1958), Systematic mineralogy of uranium and thorium, USGS Bull. 1064: 119; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 51, 52.; Axelrod, J.M., et al (1951), The uranium minerals from the Hillside mine, Yavapai County, Arizona, American Mineralogist: 36: 1-22.
  • Colorado
    • Clear Creek Co.
      • Idaho Springs Mining District (Virginia Mining District)
Minerals of Colorado (1997) E.B. Eckel
Minerals of Colorado (1997) E.B. Eckel
      • Lawson Mining District (Dumont Mining District; Montana Mining District)
Minerals of Colorado (1997) Eckel, E. B.; U.S. Geological Survey Professional Paper 371
    • Garfield Co.
      • East Rifle Creek area
Minerals of Colorado (1997) Eckel, E. B.
Minerals of Colorado (1997) E.B. Eckel
    • Jefferson Co.
      • Ralston Buttes Mining District
Minerals of Colorado (1997) Eckel, E. B.
    • Montrose Co.
      • Uravan Mining District
        • Paradox Valley
Minerals of Colorado (1997) Eckel, E. B.
Minerals of Colorado (1997) Eckel, E. B.
  • New Mexico
    • Cibola Co.
      • Grants
Minerals of New Mexico 3rd ed.
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
    • McKinley Co.
Northrup, Minerals of New Mexico, 3rd Rev. Ed., 1996
      • Poison Canyon area
New Mexico Bureau of Mines and Mineral Resources
NMBMMR Memoir 15 Geology and Technology of the Grants Uranium Region
NMBMMR Memoir 15 Geology and Technology of the Grants Uranium Region
    • Sandoval Co.
NMBMMR Memoir 38 Geology and Technology of the Grants Uranium Region 1979; USGS Open-File Report 79-1510
  • Oklahoma
    • Comanche Co.
Rocks & Min. vol. 72 (1997)
  • Utah
    • Emery Co.
      • San Rafael Mining District (San Rafael Swell)
        • Delta
UGMS Bull 117 Minerals and Mineral Localities of Utah
    • Grand Co.
    • San Juan Co.
      • Elk Ridge
UGMS Bull 117 Minerals and Mineral Localities of Utah
      • Lisbon Valley Mining District (Big Indian Mining District; Big Indian Wash - Lisbon Valley area)
UGMS Bull 117 Minerals and Mineral Localities of Utah
      • Red Canyon
Travis Olds collection; Kampf, A.R., Plášil, J., Kasatkin, A.V., Marty, J., and Čejka, J. (2018) Markeyite, a new calcium uranyl carbonate mineral from the Markey mine, San Juan County, Utah, USA. Mineralogical Magazine, 82, 1089-1100.
      • White Canyon
Finnell, T. L., Franks, P. C., & Hubbard, H. A. (1963). Geology, ore deposits, and exploratory drilling in the Deer Flat area, White Canyon district, San Juan County, Utah USGS Bulletin 1132
Minerals and Mineral Localities of Utah. Utah Department fo Natural Resources Bulletin 117. Jan. 1981; Page, L. R.; Stocking, H. E.; Smith, H. B. (1956) Contributions to the geology of uranium and thorium by the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955. USGS Professional Paper 300 pp281-284; Finnell, T. L., Franks, P. C., & Hubbard, H. A. (1963). Geology, ore deposits, and exploratory drilling in the Deer Flat area, White Canyon district, San Juan County, Utah USGS Bulletin 1132
        • Fry Mesa
Jakub Plášil, Karla Fejfarová, Radek Škoda, Michal Dušek, Joe Marty and Jiří Čejka (2013): The crystal structure of magnesiozippeite, Mg[(UO2)2O2(SO4)](H2O)3.5, from East Saddle Mine, San Juan County, Utah (U.S.A.). Mineral. Petrol. 107, 211-219.
  • Wyoming
    • Johnson Co.
Handbook of Mineralogy
Mineral and/or Locality  
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